prompt_toolkit: 0.46 -> 0.47

pkgs/top-level/python-packages.nix

···
 
   prompt_toolkit = buildPythonPackage rec {
     name = "prompt_toolkit-${version}";
-    version = "0.46";
+    version = "0.47";
 
     src = pkgs.fetchurl {
-      sha256 = "1yq9nis1b2rgpndi2rqh4divf6j22jjva83r5z8jf7iffywmr8hs";
+      sha256 = "1xkrbz7d2mzd5r5a8aqbnhym57fkpri9x73cql5vb573glzwddla";
       url = "https://pypi.python.org/packages/source/p/prompt_toolkit/${name}.tar.gz";
     };